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Nov 8 2017 5587 - 2015-2018 Focus ST - May Illuminate The Malfunction Indicator Lamp (MIL) With Misfire Codes Diagnostic Trouble Codes (DTCs) P0300 And/Or P0316

Some 2015-2018 Focus ST vehicles may exhibit MIL On with DTC's P0300 and/or P0316 store in Powertrain Control Module(PCM) memory. Vehicle may also exhibit perceived misfire after cold start until Engine Coolant Temperature(ECT) reaches 49 degrees C (120 degrees F) Install (4) new CYFS-12-YEC spark plugs and set plug gap to 1.0mm(0.040”). Use ROTUNDA RTTP tool KDT165 or equivalent to gap and adjust the plugs before installing. For Drivability concerns Refer to Powertrain Control/Emissions Diagnosis (PC/ED) manual. Engineering is currently investigating this concern. To assist with the investigation use the Report A Vehicle Concern link at the bottom of the Oasis report and submit a Global Concern Report (GCR). Continue to monitor OASIS for updates.
 

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Large gap for a forced induction, small for NA. Im sure 40thou would be fine for easy driving.
That's backwards. More boost = smaller gap.


.040 good god you could drive a school bus through that... LOL
 

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That's backwards. More boost = smaller gap.


.040 good god you could drive a school bus through that... LOL
I am sure your mastery of the English language is fathomless, however you may have forgotten your coffee when you read that


Cheers!
If it makes you feel better some of us understood what you meant lol

I'm just kind of curious because that gap they're recommending is larger than stock.
 
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